So the fuel gauge on my 260z goes straight to full when the ignition is turned on, I reckon I have less than a quarter of a tank of fuel and I'm getting a resistance of 11 ohms acrosss the sender contacts which I assume is about right? Not sure of the full resistance range of a working sender unit so if anyone knows off hand that would be a big help! Looking at the wiring diagram in the FSM it doesn't make sense. Someone please tell me I'm not going crazy and the diagram in the FSM is wrong! The diagram shows the 'live' yellow wire from the sender going through connector 3 and coming out black & white and going straight to the ignition switch. It also shows the black & white wire from the fuse box going through connector 3 and coming out yellow and going to the gauge. I'm pretty sure yellow should come out yellow and b/w should come out b/w otherwise the circuit just doesn't work! As it is I am reading the b/w wire at the fuse box as being shorted to ground which I am pretty sure is not right and could explain the full reading on the gauge; is there anything else using this fuse? Everything else seems fully functional.